What This Stock Target CAGR Calculator Does
An analyst says a stock could hit $180 in two years. The price today is $120. Sounds exciting—but what annual return would that require? Without doing the math, you might think "about 25%" when the answer is actually 22.5%. Getting this wrong leads to unrealistic expectations.
This stock target CAGR calculator solves for the compound annual growth rate implied by any price target. Enter a current price, target price, and time horizon, and it shows the annualized return needed. You can also work backwards—enter a CAGR and see what price that implies.
The common mistake is treating percentage gains as simple math. A stock that doubles in five years didn't earn "20% per year"—it earned about 14.9% compounded annually. This calculator makes those relationships clear so you can evaluate targets with realistic expectations about what growth rates are actually implied.
The CAGR Formula Explained
CAGR stands for Compound Annual Growth Rate. It represents the constant yearly return that would take you from a starting value to an ending value over a specific period:
Calculating CAGR:
CAGR = (Ending Value / Beginning Value)^(1/Years) - 1
Finding Target Price:
Target Price = Current Price × (1 + CAGR)^Years
Finding Years to Target:
Years = ln(Target / Current) / ln(1 + CAGR)
Why CAGR Differs from Average Returns
A stock goes from $100 to $50 (down 50%), then from $50 to $100 (up 100%). The average return is 25%. But your money is exactly where it started—the CAGR is 0%. This is why CAGR matters: it reflects actual outcomes, not misleading averages.
The Rule of 72 offers a quick mental shortcut: divide 72 by your annual return to estimate years to double. At 10% CAGR, your investment doubles in roughly 7.2 years.
Two Scenarios to Consider
Example 1: Evaluating an Analyst Price Target
Setup: Stock trades at $85 today. An analyst sets a 12-month target of $115. What return does this imply?
Result: CAGR = ($115 / $85)^(1/1) - 1 = 35.3%
What this means: A 35% gain in one year is aggressive. For context, the S&P 500 has achieved this in exceptional years but rarely back-to-back. Either the analyst sees a specific catalyst, or the target might be overly optimistic.
Example 2: Long-Term Wealth Building Goal
Setup: You want $50,000 to become $200,000 in 15 years. What annualized growth rate is required?
Result: CAGR = ($200,000 / $50,000)^(1/15) - 1 = 9.7%
What this means: Roughly 10% annual growth is historically achievable for diversified stock portfolios over long periods. This goal is ambitious but within the realm of historical norms—not guaranteed, but reasonable as a planning target.
When This Calculator Helps
Good For
- Sanity-checking analyst price targets against historical return ranges
- Understanding what growth rate your investment thesis implies
- Comparing required returns across different opportunities
- Learning the math behind compound growth rates
Not Designed For
- Predicting what any stock will actually do
- Deciding whether to buy or sell (CAGR math doesn't answer that)
- Accounting for dividends, taxes, or transaction costs
- Measuring risk—two investments can have the same CAGR with vastly different volatility
Assumptions and Limitations
This calculator shows pure math—no prediction, no recommendation. It assumes smooth, constant growth, which real stocks never deliver. Actual returns bounce around wildly year to year.
The optional dividend yield field adds a simple approximation to total return (price CAGR + dividend yield). Real dividend investing involves reinvestment timing, changing payouts, and taxes—all ignored here.
Context matters when interpreting CAGR. Sustained 15%+ annual returns over a decade are exceptional. Anything above 20% for extended periods is very rare. Use this tool to understand what's implied, then decide if those implications seem realistic given what you know about the company and market conditions.
Reference Points
- SEC Investor.gov — Compound growth and CAGR concepts
- Federal Reserve FRED Database — Historical market return data
- FINRA Investor Education — Understanding investment returns
For Educational Purposes Only - Not Financial Advice
This calculator provides estimates for informational and educational purposes only. It does not constitute financial, tax, investment, or legal advice. Results are based on the information you provide and current tax laws, which may change. Always consult with a qualified CPA, tax professional, or financial advisor for advice specific to your personal situation. Tax rates and limits shown should be verified with official IRS.gov sources.